Two years of experience with semitechnical scale membrane bioreactor (MBR)
2007 (English)In: Vatten, ISSN 0042-2886, Vol. 63, no 1, 69-78 p.Article in journal (Refereed) Published
In wastewater treatment applications the MBR technology combines biological treatment and a membrane systemto provide organic and suspended solids removal. Installation of low-pressure membranes within a biological reactor system replaces sedimentation, screening and media filtration as means of separating mixed liquorsuspended solids (MLSS) from treated wastewater. This study is focused on experiments with ZeeWeed10™MBR (Zenon GmbH) installed at the outlet of the main process line at Himmerfjärden WWTP, situated inGrödinge (south of Stockholm, Sweden). Results obtained for the MBR tests showed effluent water qualityimprovement in comparison with the full-scale plant performance with efficiency from 12 % removal efficiencyfor total nitrogen to 100 % for MLSS. Additionally, Design of Experiments methodology (Modde 7), wasappliedfor evaluation of fouling phenomenon in order to optimize the ZeeWeed10™ operation. 35 l m–2 h–1of flux and 7 minutes filtration with 40s of backwash were found as the optimal effective permeation conditionsfor the MBR process. The permeation fouling rate (PFR) was chosen as the major criterion that illustrates themembrane fouling occurrence and shows the necessity for membrane cleaning procedure. Furthermore, thecomparative studies of two membrane units (ZW500 and ZWNEW) were completed with an emphasis on fouling occurrence and indicated the ZWNEW as more fouling-resistant.
Place, publisher, year, edition, pages
2007. Vol. 63, no 1, 69-78 p.
designing of experiments (DOE), fouling phenomenon, membrane bioreactor (MBR), wastewater
IdentifiersURN: urn:nbn:se:kth:diva-7037OAI: oai:DiVA.org:kth-7037DiVA: diva2:11917
QC 201011042007-05-042007-05-042010-11-04Bibliographically approved